function turnoff()
	{
  for(i=1;i<=5;i++)
  	{
  	if(document.getElementById('menu_child'+i))
  		{
  		if(document.getElementById('menu_child'+i).style.visibility == 'visible')
  			document.getElementById('menu_child'+i).style.visibility='hidden';
  		}
  	}
	}
	
function toggle(which)
	{
	turnoff();
	if(document.getElementById('menu_child'+which).style.visibility == 'visible')
		document.getElementById('menu_child'+which).style.visibility='hidden';
	else
		document.getElementById('menu_child'+which).style.visibility='visible';
	}
	
if(document.onclick)
	{
	turnoff();
	}